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  2. Headspace (firearms) - Wikipedia

    en.wikipedia.org/wiki/Headspace_(firearms)

    Headspace positioning of rimless, rimmed, belted and straight cartridges Several different rimmed, .22 rimfire cartridges, which have a uniform forward diameter, and which have headspace on the rim, allowing any length of cartridge shorter than the maximum size to be used in the same firearm Firearms chambered for tapered rimmed cartridges like this .303 British cannot safely fire shorter ...

  3. Talk:Headspace (firearms) - Wikipedia

    en.wikipedia.org/wiki/Talk:Headspace_(firearms)

    Headspace for a firearm made for rimmed ammunition is the free space that remains between the rim-stop and the bolt face (less the thickness of the rim) once the cartridge is fully within the chamber and the bolt is fully home and locked (if it is a breach locked action).

  4. .380 ACP - Wikipedia

    en.wikipedia.org/wiki/.380_ACP

    The .380 ACP (Automatic Colt Pistol), also known as .380 Auto, .380 Automatic, or 9×17mm, is a rimless, straight-walled pistol cartridge that was developed by firearms designer John Moses Browning. The cartridge headspaces on the mouth of the case. [5]

  5. RI looking to build understanding of firearms: Free intro ...

    www.aol.com/ri-looking-build-understanding...

    RI looking to build understanding of firearms: Free intro class draws diverse crowd. Gannett. Jack Perry, Providence Journal. February 23, 2024 at 5:19 AM.

  6. Glossary of firearms terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_firearms_terms

    Caliber/calibre: In small arms, the internal diameter of a firearm's barrel or a cartridge's bullet, usually expressed in millimeters or hundredths of an inch; in measuring rifled barrels this may be measured across the lands (.303 British) or grooves (.308 Winchester) or; a specific cartridge for which a firearm is chambered, such as .45 ACP or .357 Magnum.

  7. Push feed and controlled feed - Wikipedia

    en.wikipedia.org/wiki/Push_feed_and_controlled_feed

    Push feed mechanisms in theory give the opportunity to design a safer firearm when it comes to a case rupture (for example due to overpressure or excessive headspace) since the bolt head can be designed with a smaller extractor claw which in turn gives the rest of the bolt head a bigger surface area and therefore better support for the ...

  8. Moral Injury: The Recruits - The ... - The Huffington Post

    projects.huffingtonpost.com/projects/moral...

    “The moral power of an army is so great that it can motivate men to get up out of a trench and step into enemy machine-gun fire.” Dr. Jonathan Shay, in his book Achilles in Vietnam The entire military is “a moral construct,” said retired VA psychiatrist and author Jonathan Shay .

  9. Rim (firearms) - Wikipedia

    en.wikipedia.org/wiki/Rim_(firearms)

    Rimmed cartridges work with belt-fed machine guns that use a two stage pull out – push through feeding operation, notably the Maxim gun, Vickers, M1919 Browning and M2HB. Push through links are possible with rimmed cartridges using specially designed belt links, but not as reliable as using push through links with rimless ammunition.